Home / 1,636.76-2,257.58-1,077.05

Finding the Fourth Proportional to 1,636.76, 2,257.58 and 1,077.05

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Solution

The fourth proportional to 1,636.76, 2,257.58 and 1,077.05 is: 1,485.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,636.76 : 2,257.58 = 1,077.05 : x
  2. Step 2: Convert to fraction form
    1,636.76/2,257.58 = 1,077.05/x
  3. Step 3: Cross multiply
    1,636.76x = 2,257.58 × 1,077.05
  4. Step 4: Simplify right side
    1,636.76x = 2,431,521.15
  5. Step 5: Solve for x
    x = 2,431,521.15/1,636.76
  6. Step 6: Final answer
    x = 1,485.57

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Half scale
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Double scale
Find fourth proportional to 1,637.76, 2,258.95 and 1,078.05
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.